/*-----------------------------------------------------------------------*/
/* Low level disk I/O module SKELETON for FatFs     (C)ChaN, 2019        */
/*-----------------------------------------------------------------------*/
/* If a working storage control module is available, it should be        */
/* attached to the FatFs via a glue function rather than modifying it.   */
/* This is an example of glue functions to attach various exsisting      */
/* storage control modules to the FatFs module with a defined API.       */
/*-----------------------------------------------------------------------*/

#include "ff.h"			/* Obtains integer types */
#include "diskio.h"		/* Declarations of disk functions */
#include "sdConf.h"
/* Definitions of physical drive number for each drive */
//#define DEV_RAM		0	/* Example: Map Ramdisk to physical drive 0 */
//#define DEV_MMC		1	/* Example: Map MMC/SD card to physical drive 1 */
//#define DEV_USB		2	/* Example: Map USB MSD to physical drive 2 */
#define DEV_SD_CARD		0

/*-----------------------------------------------------------------------*/
/* Get Drive Status                                                      */
/*-----------------------------------------------------------------------*/

DSTATUS disk_status (
	BYTE pdrv		/* Physical drive nmuber to identify the drive */
)
{

	return RES_OK;
}



/*-----------------------------------------------------------------------*/
/* Inidialize a Drive                                                    */
/*-----------------------------------------------------------------------*/

DSTATUS disk_initialize (
	BYTE pdrv				/* Physical drive nmuber to identify the drive */
)
{
	DSTATUS stat;

	switch (pdrv)
	{
		case  DEV_SD_CARD:
			stat=sdio_sd_init();
			if(stat==SD_OK)
				return  0;
	}
	return STA_NOINIT;
}



/*-----------------------------------------------------------------------*/
/* Read Sector(s)                                                        */
/*-----------------------------------------------------------------------*/

DRESULT disk_read (
	BYTE pdrv,		/* Physical drive nmuber to identify the drive */
	BYTE *buff,		/* Data buffer to store read data */
	LBA_t sector,	/* Start sector in LBA */
	UINT count		/* Number of sectors to read */
)
{
	int result=0;

	switch (pdrv) 
	{
		case DEV_SD_CARD :
			// translate the arguments here
			if(count==0)
				return RES_PARERR;
			result = sd_read_disk(buff, sector, count);
			if(result!=SD_OK)
			{
				sdio_sd_init();
				result= sd_read_disk(buff, sector, count);
			}
		// translate the reslut code here

			if(result==SD_OK)
				return 0;
	}

	return RES_PARERR;
}



/*-----------------------------------------------------------------------*/
/* Write Sector(s)                                                       */
/*-----------------------------------------------------------------------*/

#if FF_FS_READONLY == 0

DRESULT disk_write (
	BYTE pdrv,			/* Physical drive nmuber to identify the drive */
	const BYTE *buff,	/* Data to be written */
	LBA_t sector,		/* Start sector in LBA */
	UINT count			/* Number of sectors to write */
)
{
	int result;

	if(count==0)
		return  RES_PARERR;
	switch (pdrv) 
	{
		case DEV_SD_CARD :
			// translate the arguments here

			result = sd_write_disk((uint8_t *)buff, sector, count);
			if(result!=SD_OK)
			{
				sdio_sd_init();				
				result = sd_write_disk((uint8_t *)buff, sector, count);				
			}
			// translate the reslut code here
			if(result==SD_OK)
				return 0;
	}

	return RES_PARERR;
}

#endif


/*-----------------------------------------------------------------------*/
/* Miscellaneous Functions                                               */
/*-----------------------------------------------------------------------*/

DRESULT disk_ioctl (
	BYTE pdrv,		/* Physical drive nmuber (0..) */
	BYTE cmd,		/* Control code */
	void *buff		/* Buffer to send/receive control data */
)
{
	int result=0;

	switch (pdrv) 
	{
		case DEV_SD_CARD:
	    switch(cmd)
	    {
		    case CTRL_SYNC:
					result = RES_OK; 
					break;	 
		    case GET_SECTOR_SIZE:
					*(DWORD*)buff = 512; 
		      result = RES_OK;
		      break;	 
		    case GET_BLOCK_SIZE:
					*(WORD*)buff = sd_cardinfo.card_blocksize;
					result = RES_OK;
					break;	 
		    case GET_SECTOR_COUNT:
					*(DWORD*)buff = sd_cardinfo.card_capacity/512;
					result = RES_OK;
					break;
		    default:
					result = RES_PARERR;
					break;
	    }			
		return result;
	}

	return RES_PARERR;
}

